2001-11-03 07:10:51 +00:00
|
|
|
/* vim:set tw=80 expandtab softtabstop=4 ts=4 sw=4: */
|
|
|
|
/* ----- BEGIN LICENSE BLOCK -----
|
|
|
|
* Version: MPL 1.1/LGPL 2.1/GPL 2.0
|
|
|
|
*
|
|
|
|
* The contents of this file are subject to the Mozilla Public
|
|
|
|
* License Version 1.1 (the "License"); you may not use this file
|
|
|
|
* except in compliance with the License. You may obtain a copy of
|
|
|
|
* the License at http://www.mozilla.org/MPL/
|
|
|
|
*
|
|
|
|
* Software distributed under the License is distributed on an "AS
|
|
|
|
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
|
|
|
|
* implied. See the License for the specific language governing
|
|
|
|
* rights and limitations under the License.
|
|
|
|
*
|
|
|
|
* The Original Code is the Mozilla ICO Decoder.
|
|
|
|
*
|
|
|
|
* The Initial Developer of the Original Code is Netscape.
|
|
|
|
* Portions created by Netscape are
|
|
|
|
* Copyright (C) 2001 Netscape. All
|
|
|
|
* Rights Reserved.
|
|
|
|
*
|
|
|
|
* Contributor(s):
|
|
|
|
* David Hyatt <hyatt@netscape.com> (Original Author)
|
|
|
|
*
|
|
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
|
|
* and other provisions required by the LGPL or the GPL. If you do not delete
|
|
|
|
* the provisions above, a recipient may use your version of this file under
|
|
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
|
|
*
|
|
|
|
* ----- END LICENSE BLOCK ----- */
|
|
|
|
|
|
|
|
|
|
|
|
#ifndef _nsICODecoder_h
|
|
|
|
#define _nsICODecoder_h
|
|
|
|
|
|
|
|
#include "nsCOMPtr.h"
|
|
|
|
#include "imgIDecoder.h"
|
|
|
|
#include "imgIContainer.h"
|
|
|
|
#include "imgIDecoderObserver.h"
|
|
|
|
#include "gfxIImageFrame.h"
|
|
|
|
#include "nsBMPDecoder.h"
|
|
|
|
|
|
|
|
// {CB3EDE1A-0FA5-4e27-AAFE-0F7801E5A1F1}
|
|
|
|
#define NS_ICODECODER_CID \
|
|
|
|
{ 0xcb3ede1a, 0xfa5, 0x4e27, { 0xaa, 0xfe, 0xf, 0x78, 0x1, 0xe5, 0xa1, 0xf1 } }
|
|
|
|
|
2003-04-02 22:45:08 +00:00
|
|
|
#if defined(XP_WIN) || defined(XP_OS2) || defined(XP_BEOS) || defined(MOZ_WIDGET_PHOTON)
|
2003-07-23 18:39:11 +00:00
|
|
|
#define GFXFORMATALPHA8 gfxIFormats::BGR_A8
|
2001-11-03 07:10:51 +00:00
|
|
|
#else
|
|
|
|
#define USE_RGBA1
|
2003-07-23 18:39:11 +00:00
|
|
|
#define GFXFORMATALPHA8 gfxIFormats::RGB_A8
|
2001-11-03 07:10:51 +00:00
|
|
|
#endif
|
|
|
|
|
|
|
|
struct IconDirEntry
|
|
|
|
{
|
|
|
|
PRUint8 mWidth;
|
|
|
|
PRUint8 mHeight;
|
|
|
|
PRUint8 mColorCount;
|
|
|
|
PRUint8 mReserved;
|
|
|
|
PRUint16 mPlanes;
|
|
|
|
PRUint16 mBitCount;
|
|
|
|
PRUint32 mBytesInRes;
|
|
|
|
PRUint32 mImageOffset;
|
|
|
|
};
|
|
|
|
|
|
|
|
class nsICODecoder : public imgIDecoder
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
NS_DECL_ISUPPORTS
|
|
|
|
NS_DECL_IMGIDECODER
|
2002-05-14 20:32:13 +00:00
|
|
|
|
2001-11-03 07:10:51 +00:00
|
|
|
nsICODecoder();
|
|
|
|
virtual ~nsICODecoder();
|
|
|
|
|
|
|
|
private:
|
2002-01-24 14:36:40 +00:00
|
|
|
/** Callback for ReadSegments to avoid copying the data */
|
|
|
|
static NS_METHOD ReadSegCb(nsIInputStream* aIn, void* aClosure,
|
|
|
|
const char* aFromRawSegment, PRUint32 aToOffset,
|
|
|
|
PRUint32 aCount, PRUint32 *aWriteCount);
|
|
|
|
|
2001-11-03 07:10:51 +00:00
|
|
|
// Private helper methods
|
|
|
|
nsresult ProcessData(const char* aBuffer, PRUint32 aCount);
|
2002-05-14 20:32:13 +00:00
|
|
|
void ProcessDirEntry(IconDirEntry& aTarget);
|
2001-11-03 07:10:51 +00:00
|
|
|
void ProcessInfoHeader();
|
|
|
|
|
2001-11-07 03:28:51 +00:00
|
|
|
nsresult SetImageData();
|
|
|
|
nsresult SetAlphaData();
|
2001-11-03 07:10:51 +00:00
|
|
|
|
2002-09-27 10:22:53 +00:00
|
|
|
PRUint32 CalcAlphaRowSize();
|
|
|
|
|
2001-11-03 07:10:51 +00:00
|
|
|
private:
|
|
|
|
nsCOMPtr<imgIDecoderObserver> mObserver;
|
|
|
|
nsCOMPtr<imgIContainer> mImage;
|
|
|
|
nsCOMPtr<gfxIImageFrame> mFrame;
|
|
|
|
|
2004-03-02 09:14:42 +00:00
|
|
|
PRUint8 mHaveAlphaData;
|
|
|
|
PRPackedBool mDecodingAndMask;
|
2001-11-03 07:10:51 +00:00
|
|
|
|
|
|
|
PRUint32 mPos;
|
|
|
|
PRUint16 mNumIcons;
|
|
|
|
PRUint16 mCurrIcon;
|
|
|
|
PRUint32 mImageOffset;
|
|
|
|
|
|
|
|
char mDirEntryArray[16];
|
|
|
|
IconDirEntry mDirEntry;
|
|
|
|
|
|
|
|
char mBIHraw[40];
|
|
|
|
BMPINFOHEADER mBIH;
|
|
|
|
|
|
|
|
PRUint32 mNumColors;
|
|
|
|
colorTable* mColors;
|
|
|
|
|
|
|
|
PRUint8* mRow; // Holds one raw line of the image
|
|
|
|
PRUint32 mRowBytes; // How many bytes of the row were already received
|
2002-10-01 21:52:30 +00:00
|
|
|
PRInt32 mCurLine;
|
2001-11-07 03:28:51 +00:00
|
|
|
|
|
|
|
PRUint8* mDecodedBuffer;
|
|
|
|
PRUint8* mAlphaBuffer;
|
2001-11-03 07:10:51 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
#endif
|